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Donegan LP 2 Replacement Lens for Opti-Visor, 1.5x Magnification, 2 Diopers, 20" Focal Length

4.8 out of 5 stars 127 customer reviews
| 7 answered questions

Price: $23.33 & FREE Shipping on orders over $49. Details
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2 Diopers
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  • Replacement lens plate for OptiVISOR magnifier which provides hands-free magnification and viewing for a variety of applications such as jewelry-making, watch-making, needlework, artwork, electronic inspection, book-reading, print inspection, and stamp-collecting
  • Available in multiple dioptric strengths that provide a specific magnification power (X), depending on the distance from the object (focal length)
  • A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8")
  • Optical-grade, acrylic lens plate ground and polished into a prismatic lens for quality, clarity, and durability
  • High-strength, durable plastic lens plate offers simple fit in OptiVISOR magnifier visor

Product Specifications
Item Weight 1.6 ounces
Number of Items 1
Part Number LP 2
Size 2 Diopers
Style Name 1.5 Magnification at 20"
Specification for this product family
Brand Name Donegan Optical
UNSPSC Code 41100000

8 new from $23.33 3 used from $19.36
$23.33 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Donegan Replacement Lens for Opti-Visor
  • +
  • Donegan LP1 OptiLOUPE Magnifier for OptiVISOR, Adds 2.5X Magnification
  • +
  • Quasar Led Lighting System for Optivisors
Total price: $56.44
Buy the selected items together


Product Description

Size: 2 Diopers

The Donegan replacement lens plate for the OptiVISOR hands-free, headband binocular magnifier, has an optical-grade, acrylic lens ground and polished into a prismatic lens, and is available in multiple dioptric strengths which provide specific magnification power (X) at specified focal lengths, or distance from object. This magnifier enhances the size and resolution of an object or image, and is commonly used for a variety of applications such as jewelry-making, watch-making, knitting, artwork, electronic inspection, book-reading, print inspection, and stamp-collecting.

Determining Magnification

Diopter
Magnification
Focal Length
(Distance from Object)
Sample View
20/20 vision
20" (50.8cm)
No Magnification
2-diopter lens
1.50X
20" (50.8cm)
1.50x Magnification
3-diopter lens
1.75X
14" (35.56cm)
1.75x Magnification
4-diopter lens
2.00X
10" (25.4cm)
2.0x Magnification
5-diopter lens
2.50X
8" (20.32cm)
2.50x Magnification
7-diopter lens
2.75X
6" (15.24cm)
2.75x Magnification
10-diopter lens
3.50X
4" (10.16cm)
3.50x Magnification

The OptiVISOR replacement lens plate is made of a durable plastic material. It is constructed to interchange in and out of the OptiVISOR body with ease. The replacement lens plate comes housed in a protective carrying case, and has a one-year limited warranty.

Diopter (D) is a technical term for the measurement of the light curvature and thickness of a lens. A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8”). The higher the diopter, the more magnification a lens can provide. As magnification increases, distance to the object (focal length), and field of view (diameter, or narrowness of view) decrease. Magnifiers and prescription eyeglasses have a diopter value, such as 1.5 or 2. The dioptric strength of an accessory lens, such as prescription eyeglasses or an eye loupe, must be added to the dioptric strength of the magnifier to calculate total magnification.

Magnifiers are devices used to enlarge the visual appearance of an object or image. Magnifiers come in a variety of styles such as hand-held, headband, standing, clip-on, eye loupe, and those that hang in a necklace form, or fit in a trouser pocket. Magnifiers are commonly made of plastic or glass. They can have one or more lenses with varying magnification abilities, and can have a binocular configuration with a single lens, or two separate lenses. They are sometimes used with LED or fluorescent light sources to help control viewing capabilities. Magnifier ability is often expressed as magnification at a specific length. For example, 1.75X at 14” means that when a magnifier is held at 14” from a viewer’s eyes, the object will be magnified 1.75 times (X) its actual size. As magnification increases, viewing areas and focal length decrease. Magnifiers sometimes have a diopter number, expressed as + or - D, which is a measurement of strength (or power) of the lens. Some magnifiers are marked with a dioptric number on the lens. A high diopter number has a higher magnification than a low diopter number. Aspheric magnifiers, unlike spheric magnifiers, produce a sharp image to the edge of the lens for less distortion. Magnifiers are widely used in jewelry inspection and fabrication, watch-making, electronic inspection, needlework, artwork, reading, print inspection, and stamp-collecting.

Donegan Optical manufactures and distributes precision visual devices for hobbyists and professionals in industry, home, office and crafts applications. The company was founded in 1952 and is headquartered in Lenexa, Kansas.

What’s in the Box?

  • Replacement lens plate for OptiVISOR magnifier
  • Fitted carrying case
  • Instruction manual

Product Details

Size: 2 Diopers
  • Item Weight: 1.6 ounces
  • Shipping Weight: 1.6 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B000M4BPUS
  • Item model number: 633096000526
  • Average Customer Review: 4.8 out of 5 stars 127 customer reviews
  • Amazon Best Sellers Rank: #56,869 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: 5 Diopers Verified Purchase
I already own the 1.75x, and wanted more magnification for certain tasks and thus purchased the 2.5x magnifier.- now I just grab the one I need for the job and it is ready to go.

Optivisor optics are clear and true - I am very pleased with the clarity of their optics - they are true and coma-free all the way to the edge of the field of view.

Also, for my aging eyes they are a great tool for certain types of bench tasks where I need a little aid - whether it is working on electronics, soldering a small joint, inspecting a broken part I am trying to repair... of course there are many uses for a magnifier. And a magnifier that is hands free, one that can be flipped up when not in use, and is comfortable to wear... well, that is why I can recommend the Optivisor (and alternate attachment lenses) to anyone!

Now I am trying to decide if I want another lens to swap out at even higher power for those times I REALLY want to "blow something up".

Thanks for reading!
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Size: 2 Diopers Verified Purchase
This is in the Toys n games category, but it should be under hardware.
I normally use reading glasses when working on scale models. But if I use any of the stronger magnification optivisor lenses, I can't use them in conjunction with the reading glasses, the visor becomes too strong and the focal length too short. That means I have to keep switching between glasses and visor. Doesn't work very well. But with these weaker lenses I can keep the reading glasses on and get a reasonable focal length, and can flip them up when I don't need the visor. problem solved!
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Size: 3 Diopers Verified Purchase
These lenses come with nice plastic retaining fasteners that push 'n' click right into your Donegan headset. You don't need to use the nuts and bolts that may have come with the original headset. I assume the nuts and bolts in my original were to secure the quite heavy 3x lenses so they would not slip out. These are "real" ground glass lenses. Not plastic.
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Size: 10 Diopers Verified Purchase
I have a low vision problem, technically legally blind, 20/200, and use magnification devices to read, use computer, etc. The Donegan LP 10 Replacement Lens for Opti-Visor, 3.5X Magnification, 10 Diopers, 4" Focal Length is the highest power lens for the Opti-Visor and although the distance...4 inches or so...is a little inconvenient, once focused, allows for reading even the smallest print. Serves as a nice addendum to my electronic device....
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Size: 10 Diopers Verified Purchase
I like the #4 lens but I needed to see some smaller items so I got this lens. The instruction on removing the lenses advise you to "pop out" the lens to change from one optical level to another but mine didn't want to "pop out". I was afraid I'd break either the lens frame or the visor so I just unscrewed the one in the visor and screwed in the other one.
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Size: 2 Diopers Verified Purchase
I paint small pendants with a lot of detail so I really needed a lens that I could work with. The lens set I bought with my Opti-Visor was too strong and you could only see the magnification if it was really close to you. This strength gives you a bit less magnification but gives you a greater distance to work with. I now use this for everything from painting tiny details to reading books. I don't know how I ever managed without it!
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Size: 10 Diopers Verified Purchase
I do a lot of modeling at 1/144 scale and these lens really bring things up close and personal. You have to bee around 4 inches from what you are looking at but for really tiny things I found that isn't a problem at all. I know some have complained about the working distance. I suppose they don't understand that these are magnifying lens, not a telescope. For those of you who do detail work, you will really appreciate these.
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Size: 10 Diopers Verified Purchase
This #10 lens was a good step up from the #4 I had in the headset. They certainly magnify more for doing real precision work. The only troubles are (1) that the focal length is small, so whatever you are working on is right up in your face and (2) because there is no adjustability of the distance of the lens from your eyes or the distance between each side (eye) of the lens, you will sometimes find it hard to not feel cross-eyed and get a good focus, so they take some getting used to. Have to have them though for working on the small stuff. Lighting is key. There's a reason that light in the dentist's chair is so bright.
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